linux-kernel - [PATCH v19 04/11] perf: arm_v7_pmu: Drop obvious comments for enabling/disabling counters and interrupts

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Message-Id: <20250202-arm-brbe-v19-v19-4-1c1300802385@kernel.org>
Date: Sun, 02 Feb 2025 18:42:58 -0600
From: "Rob Herring (Arm)" <robh@...nel.org>
To: Will Deacon <will@...nel.org>, Mark Rutland <mark.rutland@....com>, 
 Catalin Marinas <catalin.marinas@....com>, Jonathan Corbet <corbet@....net>, 
 Marc Zyngier <maz@...nel.org>, Oliver Upton <oliver.upton@...ux.dev>, 
 Joey Gouly <joey.gouly@....com>, Suzuki K Poulose <suzuki.poulose@....com>, 
 Zenghui Yu <yuzenghui@...wei.com>, James Clark <james.clark@...aro.org>, 
 Anshuman Khandual <anshuman.khandual@....com>
Cc: linux-arm-kernel@...ts.infradead.org, linux-perf-users@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org, 
 kvmarm@...ts.linux.dev
Subject: [PATCH v19 04/11] perf: arm_v7_pmu: Drop obvious comments for
 enabling/disabling counters and interrupts

The function calls for enabling/disabling counters and interrupts are
pretty obvious as to what they are doing, and the comments don't add
any additional value.

Signed-off-by: Rob Herring (Arm) <robh@...nel.org>
---
 drivers/perf/arm_v7_pmu.c | 44 --------------------------------------------
 1 file changed, 44 deletions(-)

diff --git a/drivers/perf/arm_v7_pmu.c b/drivers/perf/arm_v7_pmu.c
index 420cadd108e7..7fa88e3b64e0 100644
--- a/drivers/perf/arm_v7_pmu.c
+++ b/drivers/perf/arm_v7_pmu.c
@@ -857,14 +857,6 @@ static void armv7pmu_enable_event(struct perf_event *event)
 		return;
 	}
 
-	/*
-	 * Enable counter and interrupt, and set the counter to count
-	 * the event that we're interested in.
-	 */
-
-	/*
-	 * Disable counter
-	 */
 	armv7_pmnc_disable_counter(idx);
 
 	/*
@@ -875,14 +867,7 @@ static void armv7pmu_enable_event(struct perf_event *event)
 	if (cpu_pmu->set_event_filter || idx != ARMV7_IDX_CYCLE_COUNTER)
 		armv7_pmnc_write_evtsel(idx, hwc->config_base);
 
-	/*
-	 * Enable interrupt for this counter
-	 */
 	armv7_pmnc_enable_intens(idx);
-
-	/*
-	 * Enable counter
-	 */
 	armv7_pmnc_enable_counter(idx);
 }
 
@@ -898,18 +883,7 @@ static void armv7pmu_disable_event(struct perf_event *event)
 		return;
 	}
 
-	/*
-	 * Disable counter and interrupt
-	 */
-
-	/*
-	 * Disable counter
-	 */
 	armv7_pmnc_disable_counter(idx);
-
-	/*
-	 * Disable interrupt for this counter
-	 */
 	armv7_pmnc_disable_intens(idx);
 }
 
@@ -1476,12 +1450,6 @@ static void krait_pmu_enable_event(struct perf_event *event)
 	struct hw_perf_event *hwc = &event->hw;
 	int idx = hwc->idx;
 
-	/*
-	 * Enable counter and interrupt, and set the counter to count
-	 * the event that we're interested in.
-	 */
-
-	/* Disable counter */
 	armv7_pmnc_disable_counter(idx);
 
 	/*
@@ -1494,10 +1462,7 @@ static void krait_pmu_enable_event(struct perf_event *event)
 	else
 		armv7_pmnc_write_evtsel(idx, hwc->config_base);
 
-	/* Enable interrupt for this counter */
 	armv7_pmnc_enable_intens(idx);
-
-	/* Enable counter */
 	armv7_pmnc_enable_counter(idx);
 }
 
@@ -1797,12 +1762,6 @@ static void scorpion_pmu_enable_event(struct perf_event *event)
 	struct hw_perf_event *hwc = &event->hw;
 	int idx = hwc->idx;
 
-	/*
-	 * Enable counter and interrupt, and set the counter to count
-	 * the event that we're interested in.
-	 */
-
-	/* Disable counter */
 	armv7_pmnc_disable_counter(idx);
 
 	/*
@@ -1815,10 +1774,7 @@ static void scorpion_pmu_enable_event(struct perf_event *event)
 	else if (idx != ARMV7_IDX_CYCLE_COUNTER)
 		armv7_pmnc_write_evtsel(idx, hwc->config_base);
 
-	/* Enable interrupt for this counter */
 	armv7_pmnc_enable_intens(idx);
-
-	/* Enable counter */
 	armv7_pmnc_enable_counter(idx);
 }
 

-- 
2.47.2